<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
	</body>
	<script type="text/javascript">
		var reg = /\b/;
		var str = "annnbnss";
		
		console.log(reg.test(str));
	</script>
</html>
